Vulnerability Description
Incorrect authorization in the aggregation pipeline tool in Amazon AWS Labs DocumentDB MCP Server before 1.0.12 might allow an authenticated MCP client to perform inappropriate write operations on the connected database via write-capable aggregation pipeline stages that bypass the read-only mode enforcement logic. To remediate this issue, users should upgrade to version 1.0.12 or later.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://aws.amazon.com/security/security-bulletins/2026-076-aws/
- https://github.com/awslabs/mcp/releases/tag/2026.04.20260408085348
- https://github.com/awslabs/mcp/security/advisories/GHSA-j694-4m5j-w8hc
FAQ
What is CVE-2026-18954?
CVE-2026-18954 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Incorrect authorization in the aggregation pipeline tool in Amazon AWS Labs DocumentDB MCP Server before 1.0.12 might allow an authenticated MCP client to perform inappropriate write operations on the...
How severe is CVE-2026-18954?
CVE-2026-18954 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-18954?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.